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How to Connect EndNote X9 to Word on Mac (Fix Incompatibility)
Question details
The user needs to connect the EndNote X9 reference management add-in to Microsoft Word on a Mac, but is encountering a compatibility warning preventing the connection.
- Product
- Microsoft Word for Mac, EndNote X9
- Device & OS
- macOS
- Scenario
- Attempting to enable and use the EndNote X9 Cite While You Write (CWYW) add-in within Microsoft Word on a Mac running a newer macOS or Word version.
- Observed behavior
- Word for Mac (version 16.84 or later) reports that the EndNote X9 add-in is incompatible, failing to load the extension in the toolbar.
Before attempting any fixes, identify your exact macOS version (Apple menu > About This Mac) and Word version (Word > About Microsoft Word) to cross-reference with EndNote's official compatibility lists.
Verify Compatibility and Upgrade EndNote
Check Clarivate's macOS compatibility guide and upgrade to a supported EndNote version if your current operating system is too new for EndNote X9.
EndNote X9 is an older release that is not officially compatible with newer macOS versions, such as macOS Monterey, Ventura, or Sonoma. Additionally, Microsoft Word frequently updates its architecture (like in version 16.84), which can break older plugins.
Click the Apple menu and select 'About This Mac' to find your macOS version. Then, open Word, click 'Word' in the top menu bar, and select 'About Microsoft Word' to find your build number.
Visit the official Clarivate support website and search for the 'macOS Compatibility Guide' to see if EndNote X9 supports your specific setup.
If you are running macOS Monterey or later, EndNote X9 will not work natively with modern Word versions. You will need to purchase or download an upgrade to EndNote 20 or EndNote 21.
If you confirm that your system versions are supported but the add-in still fails, reach out to Clarivate Support for a tailored troubleshooting patch for EndNote X9.
Experience a Faster, Hassle-Free Office Suite on Mac
If Microsoft Word compatibility issues with add-ins are slowing down your research and writing, try WPS Office. It is a highly compatible, free, and lightweight alternative to Microsoft Office that runs seamlessly on macOS, offering a familiar interface without the constant plugin headaches.
- 1. Download the Installer: Visit the official WPS website and download the free WPS Office suite for Mac.
- 2. Install on Your Mac: Open the downloaded file and drag the WPS Office icon into your Applications folder.
- 3. Open Your Research Documents: Launch WPS Writer and directly open your existing .docx files to continue writing with complete formatting preservation.
Frequently Asked Questions
Why does Word for Mac say the EndNote X9 add-in is incompatible?
Word for Mac routinely updates its underlying architecture to comply with new Apple security standards. When Word updates (such as in version 16.84), older add-ins like EndNote X9 that rely on outdated frameworks are blocked from running to prevent application crashes.
Can I use EndNote X9 on macOS Monterey or newer?
Generally, no. Clarivate has stated that EndNote X9 is not fully compatible with macOS Monterey or later versions. You will likely experience add-in crashes or complete incompatibility in Word, and upgrading to EndNote 20 or 21 is highly recommended.
How do I manually install the EndNote CWYW tool in Word for Mac?
If you are on a compatible OS, you can manually install the tool by navigating to the EndNote application folder, finding the 'Cite While You Write' folder, and copying the 'EndNote CWYW Word OS X.bundle' file into the Microsoft Word Startup folder.
